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Final Report
出版Publications Office of the European Union, 2013
ISBN927929010X9789279290107
URLhttp://books.google.com.hk/books?id=8jGEAQAACAAJ&hl=&source=gbs_api
註釋The objective of the Zincana project is to develop a method for zinc bath composition measurements based on the LIBS system, adapted for main and traces elements analysis and optimised for precipitates characterisation. Hot Dip Galvanizing bath modelling has also been developed and used for industrial configuration to understand dross precipitation. The knowledge acquired is used to propose actuator to limit this phenomenon critical for coated product quality. From a lab experiments point of view, we show that solid LIBS is a reliable technique to measure compositions of zinc-based samples, either for main elements (Zn, Fe, Al) or for low concentration elements (Sb, Sn, Pb) with contents above 100 ppm. GalvaLIBS technology has also been used successfully during lab trials to measure main elements composition and lower concentrated elements. We show that galvaLIBS can also be used to characterise lab pot cleanliness, more qualitatively than quantitatively. Industrial trials performed during the project with galvaLIBS are less convincing. The system shows indeed unstable signals and was not reliable from one day to the other. The last part of the project devoted to the modelling of HDG bath has been realised by the development of models based on fluid mechanics calculations coupled to chemical equilibrium calculations. Interesting data can be extracted from 3D model, for example to propose process adaptation to minimise dross precipitation and contribute to the optimisation of the process. To conclude, galvaLIBS remains an interesting and innovative technology to control and manage zinc bath composition and new equipment would deserve testing in industrial environments to check the reliability of the measurements.